CN209880633U - Thermal lamination equipment for thin film solar cell module - Google Patents
Thermal lamination equipment for thin film solar cell module Download PDFInfo
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- CN209880633U CN209880633U CN201920547476.5U CN201920547476U CN209880633U CN 209880633 U CN209880633 U CN 209880633U CN 201920547476 U CN201920547476 U CN 201920547476U CN 209880633 U CN209880633 U CN 209880633U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a hot lamination equipment for thin-film solar cell module, include: the main heating device is provided with a first temperature adjusting device, and the first temperature adjusting device is used for heating the temperature of the main heating device to a target temperature of a hot lamination process; the auxiliary heating device is buckled with the main heating device to form a laminating chamber for accommodating the thin-film solar cell module; the laminating assembly is arranged in the laminating cavity and used for laminating the thin-film solar cell assembly; wherein the slave heating device is provided with a second temperature adjusting device, and the second temperature adjusting device is used for adjusting the temperature of the slave heating device to be lower than the cross-linking temperature of the bonding layer in the thin film solar cell module. The quality of a thin-film solar cell module product obtained by adopting the thermal lamination equipment to perform thermal lamination is improved.
Description
Technical Field
The application relates to the technical field of thin film solar cell production equipment, in particular to thermal lamination equipment for a thin film solar cell module.
Background
In the production process of the thin-film solar cell module, the thermal lamination process is a key step for completing the solar chip to the finished solar cell panel. The thermal lamination process generally combines at least two layers of materials of the same or different types into a single body by means of heat and pressure.
In the specific thermal lamination process, the upper and lower bonding layers of the upper packaging layer (such as glass, a transparent polymer composite film and the like), the upper bonding layer (such as EVA and the like), the solar cell chip layer, the lower bonding layer (such as EVA and the like) and the lower packaging layer (namely the back plate) are sequentially arranged and crosslinked under the heating and pressurizing state, so that the upper and lower packaging layers and the solar cell chip are tightly pressed and bonded together.
However, the existing thermal lamination process has the problem that the defects of bubbles or wrinkles and the like occur in the thin-film solar cell module after thermal lamination, so that the quality of the product is reduced. Therefore, a thermal lamination device for a thin film solar cell module is needed to solve the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hot lamination equipment for thin-film solar cell module has improved the quality of thin-film solar cell module product.
Based on the above object, the utility model provides a hot lamination equipment for thin-film solar cell module, include: the main heating device is provided with a first temperature adjusting device, and the first temperature adjusting device is used for heating the temperature of the main heating device to a target temperature of a hot lamination process; the auxiliary heating device is buckled with the main heating device to form a laminating chamber for accommodating the thin-film solar cell module; wherein the slave heating device is provided with a second temperature adjusting device, and the second temperature adjusting device is used for adjusting the temperature of the slave heating device to be lower than the cross-linking temperature of the bonding layer in the thin film solar cell module.
Optionally, the thermal lamination apparatus further includes an air pressure adjusting system and a lamination assembly, the air pressure adjusting system includes a plurality of independently operating air pressure adjusting devices, the lamination assembly is disposed in the lamination chamber to laminate the thin-film solar cell assembly, the lamination assembly includes a first elastic member and a second elastic member, the first elastic member is fastened with the main heating device to form a first cavity, the second elastic member is fastened with the slave heating device to form a second cavity, when the slave heating device is fastened with the main heating device, an intermediate cavity is formed between the first elastic member and the second elastic member, and the air pressure adjusting device is at least respectively communicated with the intermediate cavity and the second cavity.
Optionally, the first cavity, the middle cavity and the second cavity are sealed with each other, a first air receiving channel is arranged on the periphery of the main heating device, and one of the air pressure adjusting devices is communicated with the first cavity through the first air receiving channel; a layer of pressure air-receiving channel is arranged on the frame of the first elastic part and/or the second elastic part, and the other air pressure adjusting device is communicated with the middle cavity through the layer of pressure air-receiving channel; and a second air receiving channel is arranged at the periphery of the secondary heating device, and the other air pressure adjusting device is communicated with the second cavity through the second air receiving channel.
Optionally, the number of the first air receiving channels is more than two, and the first air receiving channels are symmetrically distributed relative to a center line of the first cavity in the laminating direction; the number of the layer air-receiving channels is more than two, and the layer air-receiving channels are symmetrically distributed along the center line of the laminating direction relative to the middle cavity; the number of the second air receiving channels is more than two, and the second air receiving channels are symmetrically distributed along the central line of the laminating direction relative to the second cavity.
Optionally, the second temperature adjustment device includes a cold source and a medium channel, the medium channel penetrates through the secondary heating device, and the cold source is communicated with the medium channel.
Optionally, the secondary heating device is configured in a plate shape, the medium channel includes two sections of main pipelines and a plurality of sub-paths, the plurality of sub-paths are disposed between the main pipelines and are communicated with the main pipelines, and the two sections of main pipelines are respectively connected with the outlet and the inlet of the cold source.
Optionally, the thermal lamination apparatus further comprises a component conveying device, wherein the component conveying device conveys the thin-film solar cell component to a position between the main heating device and the slave heating device and close to the slave heating device.
Optionally, the conveying belt is disposed between the first elastic member and the second elastic member, and a conveying direction of the conveying belt is substantially perpendicular to a lamination direction.
Optionally, the second temperature adjustment device adjusts the temperature of the slave heating device to be less than one-half of the crosslinking temperature.
Adopt the utility model provides a thermal lamination equipment is when carrying out thermal lamination technology to thin-film solar cell module, because the second temperature regulation device becomes the cross-linking temperature that is less than the tie coat from heating device's temperature regulation, consequently, the adhesion can not take place for the tie coat at the in-process that carries to main heating device and between the follow heating device thin-film solar cell module, and because the temperature from heating device is lower, gas between each layer slowly releases among the thin-film solar cell module, avoid thin-film solar cell module to be heated the inequality and lead to the fold or be heated the appearance that leads to the bubble too fast. In addition, before the thermal layer laminating cavity, the thin-film solar cell module is placed above the secondary heating device, so that the whole thin-film solar cell module is preheated by the secondary heating device, and the phenomenon that wrinkles are generated due to local heating is avoided. And after the thermal layer is laminated in the cavity, the temperature of the thin-film solar cell module is raised under the heating of the main heating device, and the bonding layer is subjected to a crosslinking reaction. Because the thin-film solar cell module is preheated before, the temperature of the thin-film solar cell module cannot be rapidly raised, and gas between layers of the thin-film solar cell module is rapidly exhausted under the condition of vacuumizing until thermal lamination is completed. Consequently adopt the utility model provides a when thermal lamination equipment carries out thermal lamination technology, avoid thin-film solar module to be heated too fast or be heated inhomogeneously and influence the quality of product.
Drawings
Fig. 1 is a schematic view of a preferred embodiment of a thermal lamination apparatus provided by the present invention;
FIG. 2 is a schematic view of a chamber formed by a thermal lamination process using the thermal lamination apparatus of FIG. 1;
FIG. 3 is a schematic view of a thermal lamination process using the thermal lamination apparatus of FIG. 1;
FIG. 4 is a schematic representation of a thermal lamination process performed using the thermal lamination apparatus of FIG. 1 after completion of the thermal lamination;
fig. 5 is an enlarged view of the end of the thermal lamination apparatus of fig. 1 before the thin-film solar cell module is transported into the thermal lamination apparatus.
Description of reference numerals: 10-a main heating device; 20-slave heating means; 300-a first resilient member; 310-a second elastic member; 400-a first cavity; 410-a second cavity; 500-a spacer tape; 510-a conveyor belt; 60-thin film solar cell modules; 70-an intermediate cavity; 80-sealing ring; 900-a first gas receiving channel; 910-a second air receiving channel; 920-laminate interface air channels.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings attached to the present application.
Adopt the utility model provides an in-process that is used for thin-film solar module's thermal lamination equipment to carry out thermal lamination, thin-film solar module is heated evenly and the temperature lifting is slow, has improved the quality of product. The thermal lamination apparatus and various components provided by the present invention will be described in detail below.
Example one
As shown in fig. 1, the thermal lamination apparatus for a thin film solar cell module provided in this embodiment includes: a master heating means 10 and a slave heating means 20. The primary heating means 10 and the secondary heating means 20 are snap-fitted to form a lamination chamber. The main heating device 10 and the slave heating device 20 may be fastened to a cavity-closing operation of the thermal lamination process, and the main heating device 10 and the slave heating device 20 are separated to an cavity-opening operation of the thermal lamination process after the thermal lamination process is completed. The thin-film solar cell module is placed in the laminating chamber to complete the hot laminating process in a vacuumizing state, and the purpose of completing the hot laminating in the vacuumizing state is to extract gas exhausted from all layers of the thin-film solar cell module out of the laminating chamber in time, so that the influence of the external environment on the hot laminating process of the thin-film solar cell module is reduced. In the present embodiment, the temperature required for the thermal lamination process is provided by the main heating device 10, that is, the target temperature of the thermal lamination process reached by the main heating device 10 enables the bonding layer in the thin film solar cell module to achieve the cross-linking reaction. That is, the main heating device 10 needs to reach the target temperature of the thermal lamination process to heat the thin film solar cell module. Ideally, the thermal lamination process target temperature is substantially equal to the cross-linking temperature of the tie layer. Considering heat dissipation, the target temperature of the hot lamination process is slightly higher than the crosslinking temperature of the bonding layers, and the crosslinking temperatures of different types of bonding layers are different and can be set according to actual production needs.
In this embodiment, the temperature increase and temperature maintenance of the main heating device are achieved by a first temperature adjusting device (not shown) provided therein, which is used to heat the temperature of the main heating device to a target temperature of the thermal lamination process. During the thermal lamination process, the first temperature regulating device monitors the temperature of the main heating device in real time, and the purpose is to keep the temperature of the main heating device at the target temperature of the thermal lamination process so as to realize continuous production of the thermal lamination process. The first temperature adjustment device may employ electric heating, such as vertical dot matrix electric heating, which is not described in detail herein. The primary heating means mentioned in this embodiment is the primary source of heat for the cross-linking reaction of the tie layer in the thermal lamination process.
The auxiliary heating device can not provide a heat source for the thermal lamination process, so that the temperature of the thin-film solar cell module is slowly increased, but the influence on the adhesive layer is avoided, therefore, the temperature of the auxiliary heating device is adjusted to be lower than the crosslinking temperature of the adhesive layer, and the auxiliary heating of the thin-film solar cell module in the thermal lamination process is realized. In addition, the structure of the master heating device and the slave heating device is not limited as long as the master heating device and the slave heating device are fastened to form a lamination chamber for accommodating the thin film solar cell module, and then the thin film solar cell module is thermally laminated in the lamination chamber. Fig. 1 shows that the main heating device and the auxiliary heating device are respectively provided with a concave part to form the laminating chamber after the main heating device 10 and the auxiliary heating device 20 are buckled.
During thermal lamination, the auxiliary heating device and the main heating device are buckled to form a laminating cavity for accommodating the thin-film solar cell module, the laminating cavity provides a sealing space for the thin-film solar cell module in the thermal lamination process, and the thin-film solar cell module is in a vacuum-pumping state in the thermal lamination process, so that the effect of a cross-linking reaction of the bonding layer is ensured. In the thermal lamination apparatus provided in this embodiment, the arrangement manner and the engagement direction of the main heating device and the sub-heating device are not limited, and may be an engagement manner in the vertical direction as shown in fig. 1, or may be another manner.
Optionally, the present embodiment provides that the geothermal lamination apparatus further comprises a lamination assembly, and the lamination assembly is disposed in the lamination chamber during lamination for laminating the thin-film solar cell assembly. The structure of the laminated assembly is not limited in this embodiment as long as uniform pressure is applied to the thin-film solar cell assembly during the thermal lamination process.
It should be particularly noted that the temperature of the heating device 20 is set by the present embodiment, and the temperature of the heating device 20 is controlled by a second temperature adjusting device (not shown) provided for adjusting the temperature of the heating device to be lower than the cross-linking temperature of the adhesive layer in the thin film solar cell module. Therefore, under the control of the second temperature adjusting means, the temperature of the secondary heating means 20 is lower than the crosslinking temperature of the adhesive layer. Based on this, the second temperature adjustment means keeps the temperature of the secondary heating means 20 below the cross-linking temperature of the adhesive layer. The purpose of the slave heating device 20 having the above function is to cause the crosslinking reaction of the adhesive layer only by the master heating device 10 at the time of the thermal lamination process, and to feed the thin-film solar cell module between the master heating device 10 and the slave heating device 20 from a position close to the slave heating device 20 before the thermal lamination, for a specific analysis, see below.
The thin film solar cell module mentioned in this embodiment is mainly a flexible thin film solar cell module. The upper packaging layer, the upper bonding layer, the solar chip layer, the lower bonding layer and the back plate of the thin-film solar cell module are combined together through a thermal lamination process, and the target temperature of the thermal lamination process is the temperature for realizing the cross-linking reaction of the upper bonding layer and the lower bonding layer. Therefore, since the thin-film solar cell module is thin and is relatively easy to be heated, before the thin-film solar cell module is sent between the main heating device 10 and the auxiliary heating device 20 by using the thermal lamination equipment provided by the embodiment for thermal lamination, the lower auxiliary heating device 20 is kept lower than the crosslinking temperature of the adhesive layer, so that the temperature for lifting the thin-film solar cell module is lower than the crosslinking temperature affecting the adhesive layer. In the feeding process, the temperature of the thin film solar cell chip is slowly raised under the influence of the heating device 20, but the raised temperature is lower than the temperature of the bonding layer for cross-linking reaction, the bonding layer in the thin film solar cell module is not affected, and in the feeding process, because the temperature is slowly raised, the gas remained in each layer of the thin film solar cell module is discharged, the gas remained in each layer is reduced, and the quality of the product of the thin film solar cell module is improved.
The crosslinking temperature at which the crosslinking reaction of the adhesive layer occurs is generally 140 to 250 c, and in view of production cost and work efficiency, the second temperature adjusting means may alternatively adjust the temperature of the slave heating means 20 to be less than one-half of the crosslinking temperature, that is, the second temperature adjusting means adjusts the temperature of the slave heating means 20 to be less than 70 to 125 c, and most preferably 40 c.
When the thermal lamination equipment provided by the embodiment is used for carrying out the thermal lamination process, the thermal lamination equipment is required to continuously carry out thermal lamination on the thin-film solar cell module which is continuously fed into the lamination chamber. The temperature of the main heating plate is kept within the range of the target temperature of the thermal lamination process through the first temperature adjusting device, repeated heating is not needed, and the temperature of the secondary heating device 20 is adjusted to be lower than the crosslinking temperature of the bonding layer through the second temperature adjusting device only after the last thin-film solar cell module is subjected to thermal lamination. Optionally, the second temperature adjusting device adjusts the temperature of the slave heating device 20 to be lower than half of the cross-linking temperature, and the thin-film solar cell module is fed between the master heating device 10 and the slave heating device 20 from a position close to the slave heating device 20, so that the working efficiency is improved, and the service life of the thermal lamination equipment is prolonged.
Example two
On the basis of the first embodiment, the thermal lamination apparatus provided in this embodiment further includes an air pressure regulating system (not shown), and the air pressure regulating system realizes that the lamination assembly completes the thermal lamination of the thin-film solar cell assembly by means of air pressing. The gas lamination mode enables the thin-film solar cell module to be stressed uniformly, the control is flexible, and the lamination effect is improved.
The air pressure adjusting system comprises a plurality of independently working air pressure adjusting devices, can be a vacuum pump, a fan and other equipment for realizing air pressure adjustment of a sealed space, and the vacuum pump is selected as the air pressure adjusting device in the embodiment in consideration of production cost. As shown in fig. 1, the laminated assembly includes a first elastic member 300 and a second elastic member 310, the first elastic member 300 is engaged with the main heating device 10 to form a first cavity 400, the second elastic member 310 is engaged with the slave heating device 20 to form a second cavity 410, and after the slave heating device 20 is engaged with the main heating device 10, an intermediate cavity 70 is formed between the first elastic member 300 and the second elastic member 310. Based on the above technical solution, a first cavity 400, an intermediate cavity 70 and a second cavity 410 are formed between the master heating device 10 and the slave heating device 20, which are adjacent to each other in sequence. The first chamber 400 and the middle chamber 70 may be in gas communication, and the second chamber 410 and the spaces formed by the first chamber 400 and the middle chamber 70 are sealed and not in gas communication with each other. The gas pressure regulating device is in gas communication with at least the intermediate chamber 70 and the second chamber 410, respectively. It can be seen that the laminated chamber formed by the snap-fitting of the main heating unit 10 and the sub-heating unit 20 in this embodiment includes a first chamber 400, an intermediate chamber 70 and a second chamber 410. The thin film solar cell module is placed in the intermediate cavity 70.
Based on the technical solution of the present embodiment, when performing the thermal lamination, the thin film solar cell module is placed between the first elastic member 300 and the second elastic member 310 for the thermal lamination. The first upper elastic member 300 and the second elastic member 310 may be made of silicone or other high temperature resistant elastic materials. Prior to thermal lamination, the temperature of the main heating device 10 is increased to a target temperature for the thermal lamination process, wherein one of the air pressure adjusting devices is in air communication with the first cavity 400 and the other air pressure adjusting device is in air communication with the second cavity 410. The first cavity 400 and the middle cavity 70 are slowly vacuumized, the second cavity 410 is inflated, or is communicated with the outside atmosphere, the second elastic member 310 is slowly close to the main heating device 10 under the action of pressure difference between two sides, in the process, the first elastic member 300 is pushed to be close to the main heating device 10 until the middle cavity 70 and the first cavity 400 reach an approximate vacuum environment, the thin film solar cell assembly abuts against the first elastic member 300, and the first elastic member 300 abuts against the main heating device 10, so that heat conduction of the main heating device 10 to the thin film solar cell assembly is completed. The pressure of the thermal lamination comes from the pressure of the second cavity 410 which is abutted against the thin film solar cell module through the second elastic member 310, and after the pressure is applied for a preset time period, the vacuumizing is finished, and the thermal lamination is completed. Next, the first cavity 400 is filled with air, the second cavity 410 is evacuated, since the first cavity 400 is in gas communication with the middle cavity 70, and the middle cavity 70 is also filled with air, and the inflation and evacuation pressures at this stage are not limited, for example, the first cavity 400 can be in communication with the atmosphere, and the second cavity 410 is evacuated, so long as the first elastic member 300 and the second elastic member 310 clamp the thin film solar cell assembly 60 which is completely laminated and move from the heating device 20. Then the second cavity 410 is communicated with the atmosphere, and finally the main heating device 10 is separated from the auxiliary heating device 20, so that the cavity opening is completed, and the thin film solar cell module 60 is removed from the upper part of the second elastic member 310. Optionally, the first chamber 400, the middle chamber 70 and the second chamber 410 are sealed with each other, the air pressure adjusting device is respectively communicated with the first chamber 400, the middle chamber 70 and the second chamber 410, and the detailed work flow of the laminating apparatus is described in the last preferred embodiment of this document.
As shown in fig. 5, in order to better achieve the sealing performance between the first chamber 400 and the second chamber 410, a sealing ring 80 is disposed between the main heating unit 10 and the first elastic member 300, and a sealing ring 80 is disposed between the sub-heating unit 20 and the second elastic member 310. The first elastic member 300 and the second elastic member 310 are made of silicone rubber, which has good flexibility and can realize better sealing performance of the middle chamber 70. In addition, the silicone rubber has a small heat capacity and is in close contact with the thin film solar cell module 60 to be laminated during the thermal lamination process, and the first elastic member 300 and the second elastic member 310 can rapidly transfer heat of the main heating device 10 and the auxiliary heating device 20 in contact with the silicone rubber during the thermal lamination process to the thin film solar cell module, thereby accurately controlling the target temperature of the thermal lamination process.
EXAMPLE III
As shown in fig. 5, on the basis of the second embodiment, the air pressure adjusting device disclosed in this embodiment is respectively communicated with the first cavity 400, the middle cavity 70 and the second cavity 410 through the air receiving channel. The position of the air receiving channel can be set at a proper position according to actual production needs.
Optionally, as shown in the figure, a first air receiving channel 900 is disposed on the periphery of the main heating device 10, and one of the air pressure adjusting devices is communicated with the first cavity 400 through the first air receiving channel 900. The frame of the first elastic member 300 and/or the second elastic member 310 is provided with a layer air-receiving channel 920, and the other air pressure adjusting device is communicated with the middle cavity 70 through the layer air-receiving channel 920. A second air receiving channel 910 is formed from the periphery of the heating device 20, and a further air pressure adjusting device is communicated with the second cavity 410 through the second air receiving channel 910. The layer air receiving passage 920 may be provided on the first elastic member 300 or the second elastic member 310, or the layer air receiving passage 920 may be provided on both of the elastic members. Therefore, the air exhaust speed can be faster, and the processing technology is simple.
On the basis of the present embodiment, in consideration of the stability of the stress when the thin film solar cell module is subjected to the thermal lamination, the number of the first air receiving channels 900 is two or more, and the first air receiving channels 900 are symmetrically distributed along the center line of the lamination direction with respect to the first cavity 400; the number of the lamination air-receiving passages 920 is two or more, and the lamination air-receiving passages are symmetrically distributed with respect to the center line of the middle chamber 70 in the lamination direction; the number of the second air receiving channels 910 is two or more, and the second air receiving channels 910 are symmetrically distributed with respect to the center line of the second cavity 410 in the laminating direction, and the power of each air pressure adjusting device corresponding to the same cavity is kept the same. Therefore, the stress stability of the thin-film solar cell module during hot lamination is improved.
Example four
In the above three embodiments, the second temperature adjustment means may include a heat source and a medium body to heat the slave heating means. In addition, in order to adjust the temperature of the slave heating means 20, the second temperature adjusting means includes a cooling source, and the medium body may lower the temperature of the slave heating means 20.
In the thermal lamination apparatus for the thin-film solar cell module provided by this embodiment, the second temperature adjustment device includes a heat sink and a medium channel (not shown), the medium channel penetrates through the secondary heating device 20, and the heat sink is communicated with the medium channel. The cold source may be an ice maker or a cold oil furnace, the cross-sectional shape of the medium passage may be a circle, and the arrangement manner in the secondary heating device 20 is not limited as long as the temperature of the secondary heating device 20 can be rapidly reduced. After the thermal lamination process is completed, the second temperature adjustment device injects a cooling medium into the medium channel through the cold source to rapidly reduce the temperature of the heating device 20 to be lower than the crosslinking temperature. When the thin-film solar cell module is fed between the main heating device 10 and the sub-heating device 20 from a position close to the sub-heating device 20, the temperature of the sub-heating device 20 is lower than the crosslinking temperature of the adhesive layer, and therefore the adhesive layer of the thin-film solar cell module 60 is preheated without changing the adhesive layer, and the gas in each layer is slowly discharged.
As a preferable scheme of the present embodiment, the secondary heating device 20 is configured in a plate shape, the medium channel includes two main pipes and a plurality of sub-paths disposed between the main pipes, the plurality of sub-paths are disposed between the main pipes and are communicated with the main pipes, and the two main pipes are respectively connected to the outlet and the inlet of the cold source. The plurality of sub-paths may be uniformly dispersed within the slave heating device 20.
EXAMPLE five
In the above four embodiments, as shown in fig. 1, the thin film solar cell module may be manually or by other conveying means placed between the master heating device 10 and the slave heating device 20, and then thermally laminated. In order to improve the production efficiency, the thermal lamination apparatus provided in the present embodiment further includes a module transfer device that transfers the thin-film solar cell module 60 from a position close to the slave heating device 20 to between the master heating device 10 and the slave heating device 20. The thin-film solar cell module 60 is sent to the position between the main heating device 10 and the auxiliary heating device 20 close to the auxiliary heating device 20, and the temperature of the auxiliary heating device 20 is lower than the cross-linking temperature, so that the temperature of the thin-film solar cell module is slowly heated and uniformly heated, and bubbles or wrinkles in each layer of the device are avoided.
Specifically, as shown in fig. 1, the module transferring device includes a conveying belt 510 and a separating belt 500, the separating belt 500 is disposed on the conveying belt 510, the conveying belt 510 conveys the thin-film solar cell module 60, and the separating belt 500 limits the thin-film solar cell module 60 on the conveying belt 510, so that the position of the thin-film solar cell module on the conveying belt and the relative position between layers in the thin-film solar cell module are kept unchanged basically, and especially the relative positions of the layers are kept unchanged when the layers are not bonded before thermal lamination. As shown, the conveying belt 510 and the separation belt 500 are disposed between the first elastic member 300 and the second elastic member 310, and the conveying direction of the conveying belt 510 is substantially perpendicular to the laminating direction. The transfer belt 510 and the separation belt 500 may be made of elastic teflon, and the thin film solar cell module 60 is fed between the main heating device 10 and the sub-heating device 20. And during the thermal lamination process, the carrier tape 510 and the release tape 500 are placed together in the intermediate chamber 70 and subjected to a high thermal vacuum environment. In addition, because the adhesion resistance of the tetrafluoro cloth is good, the thin film solar cell module is always coated by the conveyer belt 510 and the isolation belt 500 in the hot lamination process, so that the overflowed binder cannot be bonded in other parts of the middle cavity 70, and the blanking is convenient. Of course, the conveyor belt 510 and the isolation belt 500 may be made of other materials that can withstand high temperature and vacuum environment, and are not limited herein.
The subassembly conveyor of this embodiment still includes running roller and driving motor, running roller coaxial coupling in driving motor, and driving motor drives the coaxial rotation of running roller, and on the running roller was located to the conveyer belt 510 cover, conveyer belt 510 realized the transmission on the running roller. Alternatively, the number of rollers is two, and the rollers are respectively disposed at both sides of the laminating chamber and adjacent to the slave heating device 20. The roll position is set for feeding the thin film solar cell module between the main heating device 10 and the sub-heating device 20 from a position close to the sub-heating device 20.
The process flow for thermal lamination using a preferred embodiment of the thermal lamination apparatus provided by the present invention is described in detail below.
The first temperature adjusting device heats the main heating device 10 to the target temperature of the hot lamination process, and the second temperature adjusting device does not perform any operation on the temperature of the slave heating device 20, namely the slave heating device 20 keeps normal temperature and can slightly preheat;
placing the thin-film solar cell module 60 between the conveyer belt 510 and the isolation belt 500 by using a module conveying device to convey the module to between the main heating device 10 and the auxiliary heating device 20;
then, the main heating unit 10 and the sub-heating unit 20 are moved toward each other to form a first chamber 400, an intermediate chamber 70, and a second chamber 410, which are sequentially sealed from each other. The intermediate chamber 70 is first evacuated as shown in fig. 2. At this time, the temperature of the heating device 20 is gradually increased from the normal temperature, but the temperature of the heating device 20 is controlled to be lower than the crosslinking temperature at which the crosslinking reaction of the adhesive layer occurs, preferably lower than half the crosslinking temperature, and the adhesive layer is not thermally deformed or crosslinked. Specifically, before the sealing environment of the thin film solar cell module 60 is not vacuumized, the cross-linking reaction of the adhesive layer does not occur, and the gas generated by the decomposition of the cross-linking reaction of the adhesive layer, which causes the existence of bubbles in the thin film solar cell module 60, is not generated.
As shown in fig. 3, after the intermediate chamber 70 reaches a substantially vacuum environment, one of the pressure adjusting devices evacuates the first chamber 400 until it is evacuated, and the other pressure adjusting device inflates or communicates with the atmosphere the second chamber 410. In this process, another pressure regulating device continuously vacuums the intermediate cavity 70, so as to extract the gas exhausted by heating in each layer of the thin-film solar cell module at any time. When the air pressure in the first cavity 400 is close to vacuum, the first elastic member 300 is attached to the main heating device 10, and the second elastic member 310 presses the thin film solar cell module 60 flatly on the first elastic member 300. Therefore, the heat of the main heating device 10 is conducted to the thin film solar cell module 60, the temperature of the main heating device 10 is the target temperature of the thermal lamination process, and under the pressure applied to the thin film solar cell module 60 by the second elastic member 310, the bonding layer of the thin film solar cell module 60 is subjected to a cross-linking reaction, so that the thermal lamination process is completed. In the process, the thin film solar cell module 60 is lifted by the second elastic member 310, so that the thin film solar cell module 60 is heated slowly and heated in the processes from the feeding to the position between the main heating device 10 and the heating device 20 to the completion of the thermal lamination, the situation that the thin film solar cell module is heated and deformed rapidly or bubbles generated in each layer of the thin film solar cell module are not discharged in time is avoided, and the quality of products is improved.
As shown in fig. 4, after the previous thin-film solar cell module 60 is thermally laminated, the second temperature adjusting device cools the slave heating device 20 to adjust the temperature thereof to be lower than the crosslinking temperature of the adhesive layer, optionally to be lower than one-half of the crosslinking temperature, preferably 40 ℃. In this step, the first chamber 400 is inflated or vented to atmosphere, while the second chamber 410 is inflated or vented to atmosphere, and the intermediate chamber 70 is inflated or vented to atmosphere. This step causes the second elastic member 310 to be attached to the slave heating device 20, the temperature of the second elastic member 310 and the conveyor belt 510 is rapidly lowered, and after the master heating device 10 and the slave heating device 20 are separated from each other, the conveyor device conveys away the thin film solar cell module subjected to thermal lamination, and conveys the next thin film solar cell module to be laminated between the master heating device 10 and the slave heating device 20. The slave heating device 20, whose temperature is rapidly lowered, has now preheated the next thin-film solar cell module 60 to be laminated before the thermal lamination.
It can be seen that, in the process of continuously thermally laminating a plurality of thin film solar cell modules, after the thermal lamination of the previous thin film solar cell module is completed, the temperature of the slave heating device 20 is lowered, so that the adhesive layer of the next thin film solar cell module to be laminated is not affected during the transfer process between the master heating device 10 and the slave heating device 20. In addition, the temperature of the thin-film solar cell module is slowly raised from the preheating temperature in the process of buckling the second elastic element 410 by the main heating device 10 and the auxiliary heating device 20, so that bubbles and wrinkles caused by rapid heating are avoided, and the heat lamination quality is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (10)
1. A thermal lamination apparatus for a thin film solar cell module, comprising:
the main heating device is provided with a first temperature adjusting device, and the first temperature adjusting device is used for heating the temperature of the main heating device to a target temperature of a hot lamination process;
the auxiliary heating device is buckled with the main heating device to form a laminating chamber capable of accommodating the thin-film solar cell module;
wherein the slave heating device is provided with a second temperature adjusting device for adjusting the temperature of the slave heating device to be lower than the cross-linking temperature of the bonding layer in the thin film solar cell module.
2. The thermal lamination apparatus as claimed in claim 1, further comprising an air pressure adjusting system and a lamination assembly, wherein said air pressure adjusting system comprises a plurality of independently operating air pressure adjusting devices, said lamination assembly is disposed in said lamination chamber for laminating said thin film solar cell assembly, said lamination assembly comprises a first elastic member and a second elastic member, said first elastic member is fastened to said master heating device to form a first chamber, said second elastic member is fastened to said slave heating device to form a second chamber, when said slave heating device is fastened to said master heating device, an intermediate chamber is formed between said first elastic member and said second elastic member, and said air pressure adjusting device is at least respectively connected to said intermediate chamber and said second chamber.
3. The thermal lamination device as claimed in claim 2, characterized in that said first cavity, said intermediate cavity and said second cavity are mutually sealed,
a first air receiving channel is arranged on the periphery of the main heating device, and one air pressure adjusting device is communicated with the first cavity through the first air receiving channel;
a layer of pressure air-receiving channel is arranged on the frame of the first elastic part and/or the second elastic part, and the other air pressure adjusting device is communicated with the middle cavity through the layer of pressure air-receiving channel;
and a second air receiving channel is arranged at the periphery of the secondary heating device, and the other air pressure adjusting device is communicated with the second cavity through the second air receiving channel.
4. The thermal lamination apparatus as claimed in claim 3, wherein said first air-receiving passages are two or more in number and are symmetrically distributed with respect to a center line of said first cavity in a lamination direction;
the number of the layer air-receiving channels is more than two, and the layer air-receiving channels are symmetrically distributed along the center line of the laminating direction relative to the middle cavity;
the number of the second air receiving channels is more than two, and the second air receiving channels are symmetrically distributed along the central line of the laminating direction relative to the second cavity.
5. The thermal lamination apparatus as claimed in any one of claims 1 to 4, wherein said second temperature regulation means comprises a cold source and a medium passage, said medium passage extending through said slave heating means, said cold source being in communication with said medium passage.
6. The thermal laminating apparatus as claimed in claim 5, wherein said slave heating means is constructed in a plate shape, said medium passage includes two sections of main pipes and a plurality of sub-paths provided between and communicating with said main pipes, said two sections of main pipes being connected to an outlet and an inlet of said cold source, respectively.
7. The thermal lamination apparatus as claimed in any one of claims 2 to 4, further comprising a module transfer device which transfers the thin film solar cell module between the master heating device and the slave heating device from a position close to the slave heating device.
8. The thermal lamination apparatus as claimed in claim 7, wherein said module transfer device comprises a conveyor belt and a separator belt, said separator belt being disposed on said conveyor belt, said conveyor belt transferring said thin film solar cell modules, said separator belt confining said thin film solar cell modules on said conveyor belt.
9. The thermal lamination apparatus as claimed in claim 8, wherein said conveyor belt is disposed between said first elastic member and said second elastic member, a conveying direction of said conveyor belt being substantially perpendicular to a lamination direction.
10. The thermal lamination apparatus as claimed in claim 1, wherein said second temperature adjustment means adjusts the temperature of said slave heating means to be lower than half of said crosslinking temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920547476.5U CN209880633U (en) | 2019-04-19 | 2019-04-19 | Thermal lamination equipment for thin film solar cell module |
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| CN201920547476.5U CN209880633U (en) | 2019-04-19 | 2019-04-19 | Thermal lamination equipment for thin film solar cell module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682025A (en) * | 2021-08-25 | 2021-11-23 | 保定中泰新能源科技有限公司 | Solar cell panel laminating machine capable of heating uniformly |
| CN113972326A (en) * | 2021-12-24 | 2022-01-25 | 佛山仙湖实验室 | Perovskite solar cell module and packaging method thereof |
-
2019
- 2019-04-19 CN CN201920547476.5U patent/CN209880633U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682025A (en) * | 2021-08-25 | 2021-11-23 | 保定中泰新能源科技有限公司 | Solar cell panel laminating machine capable of heating uniformly |
| CN113972326A (en) * | 2021-12-24 | 2022-01-25 | 佛山仙湖实验室 | Perovskite solar cell module and packaging method thereof |
| CN113972326B (en) * | 2021-12-24 | 2022-03-08 | 佛山仙湖实验室 | Perovskite solar cell module and packaging method thereof |
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